2019 
April 15 - April 19, 2019
 Isfahan/Iran
ISCRA  Conference 
on representation theory of algebras
Lecture:  Degeneration of Zero in Triangulated Categories 
May 20, 2019
 Institut Henri Poincaré Paris. Séminaire d'algèbre
Exposé: Dégénérescence
  de zéro dans des catégories triangulées
 voici l'annonce 
June 28, 2019
 Université Paris 7 Denis Diderot
soutenance d'HDR de Patrick LeMeur
July 29 - August 1, 2019
 Universitas Gadjah Mada Yogyakarta/Indonesia 
algebra seminar:   Degeneration of Zero in Triangulated Categories 
 SEAMS conference
Invited plenary lecture:  On equivalences between categories of representations  pdf   here is the  video  on youtube.
Algebra Mini Symposium on Module and Ring Theory; in honor of
Sri Wahjuni's and Irawati's 60th birthday. Lecture:
  Triangulated version of
  Auslander-Kleiner's Green correspondence 
 2020 
Due to the SARS Cov2 virus pandemic only few online
meetings attended
November 9 to November 25, 2020
 Online workshop and conference 
ICRA 19.